Metallic draft member.



W. D. HENRY.

METALLIG DRAFT MEMBER.

APPLICATION FILED 11.13, 1911.

1,019,736, Patented Mar.5, 1912.

, I: 0y mu, cm;

UNITED STATES PATENT OFFICE.

WILLIAM D. HENRY, OF PITTSBURGH, PENNSYLVANIA.

METALLIC DRAFT MEMBER.

To all whom it may concern:

Be it known that I, WILLIAM D. HENRY,

a resident of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Metallic Draft Members, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, in which Figure 1 is a plan view of a portion of one form of double-tree made in accordance with my invention. Fig. 2 is a tranverse section through the end of the evener bar before it is formed into its final shape. Fig. 3 is a similar view after it has been finally shaped. Fig. 4 is a longitudinal section through the end of a finished evener bar; and Fig. 5 is a similar view of a modified form.

. My invention relates to metallic draft members generally known as swingle or double trees.

The object of my invention is to provide a cheap and efiicient swingle or double tree which can be formed from metallic tubing. In accordance with my invention, the ends of the tubing which have been flattened and punched or drilled to provide an opening to receive the attaching member, are reinforced to compensate for the destruction of the tubular shape, and the removed material.

The precise nature of my invention will be best understood by reference to the drawings, which will now be described, it being premised, however, that changes may be made without departing from the spirit and scope of my invention as defined in the appended claims.

In the drawings the numeral 2 designates the evener bar which is provided with a hook 3 for connecting the double-tree to the implement or wagon.

4 is a sleeve connected to the evener bar, and having an eye 5 to which said hook is connected.

Connected to each end of the evener bar by abolt6andaclevis7 is a swingle-tree 8, the ends thereof being provided with trace hooks 9.

It will readily be understood by those fa- Specification of Letters Patent.

Application filed April 13, 1911.

Patented Mar. 5, 1912.

Serial No. 620,901.

miliar wit-h the art, that the various connections above described, may be changed to meet the requirements of the trade, or use to which said double-tree is to be put.

The evener bar is formed from a piece of iron or steel tubing, which is swaged or tapered toward each end. After the blanks have been tapered, a piece of steel or iron, such as indicated at 10, in Fig. 2, is inserted into each end. The ends are then flattened and the ends of the tube are welded to the metal inserts, as illustrated in Fig. 3. After the ends are flattened they are drilled or punched to provide an orifice 11 for the bolts 6.

In Fig. 5, I have illustrated a modified form in which the ends of the evener bar are reinforced by overlapping the ends of the tube to provide four plies of material at the ends. In this construction, the ends of the tube are flattened as indicated in dotted lines at 12. Each end of the tube is then bent upon itself and the four plies of material are welded to each other as indicated at 13, and are then punched or drilled to provide a bolt hole 11.

The swingle-trees are made in a manner similar to the evener bar.

The advantages of my invention result from the provision of a swingle-trce or evener bar having reinforced ends of the character described. It is well known to the art that the weakest point of an evener bar or swingle-tree of this character is at its ends where the tube has been flattened, as the resisting quality of a tubular section has been destroyed. By the use of my invention the ends can be flattened without reducing the strength thereof.

I claim 1. A metallic draft member having flattened and spread end portions with reinforces welded therein, a portion of the reinforces being also flattened and spread within the end portions of the draft member to thereby form an interlock between the re inforces and the ends of the draft member; substantially as described.

2. A metallic draft member having flattened and circular shaped end portions with reinforces welded therein, the circular shaped portion being of greater diameter In testimony whereof, I have hereunto set than the diameter of the tube, a portion of my hand.

said reinforces also being flattened to form an interlock with said 7 end portions, the VILLIAM HENRY' end portions having eyes formed there- Witnesses:

through and through the reinforces; sub- A. M. DIEHL,

stantially as described. J. E. IRVIN.

Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. G. 

